Dendrodendritic synapses in the cat reticularis thalami nucleus: a structural basis for thalamic spindle synchronization
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TL;DR
It is concluded that reticularis cell dendrites form a local inhibitory network and the functional implications of this type of organization for the synchronization of spindle oscillations are discussed.
Abstract
Dendrodendritic synapses have been found between the dendrites of reticularis thalami neurons. These synapses were symmetric and the presynaptic element contained pleomorphic vesicles. A few cases of reciprocal dendrodendritic synapses were also observed. Given the morphological features of the synapses and the well-established GABAergic nature of reticularis neurons it is concluded that reticularis cell dendrites form a local inhibitory network. The functional implications of this type of organization for the synchronization of spindle oscillations are discussed and a new hypothesis is proposed.